Machine for forming ornamental indentations upon leather.



F. P. DORSEY.

MACHINE FOR FORMING ORNAMENTAL INDENTATIONS UPON LEATHER.

' APPLICATION FILED JUNEM, 1910.

1,048,506, Patented Dec. 31, 1912.

HHHH "MW *R LVITNESSES:

[N VIEN TOR.

i. STAES PATENT OFFICE.

FARNUM F DORSEY, OF ROCHESTER, NEW YORK. ASSIGl-INOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MACHINE FOR FORMING ORNAMENTAL INDENTATIONS UPON LEATHER.

leather, particularly for forming indentations upon the upper surface of the welt or the sole margin of a shoe to simulate the appearance of a scam.

One object of the invention is to produce an indenting machine of simple construction which shall indent work rapidly and ell'ectively.

Another object of the invention is to pro duce an imlenting machine which shall feed the work positively by means of the indenting tool, but without danger of injury to the indented surface of the work.

To the above-mentioned ends I employ in myimproved indenting machine an indenting tool engaging one Side of the work, in combination with means engaging the opposite side of the work, and acting to subject the work to a rapid succession of impulsions in the direction of the tool, whereby the work is forced intermittently against the tool to produce indentations of the required depth, while being intermittently released to a snflicient extent to permit a substantially constant feeding movement of the work.

Other objects and features of the inventi'on will be set forth in connection with the following description of the illustrated embodiment thereof.

In the drawings :Figure l is a side eleration of an indenting machine embodying the present invention, parts of the machine being shown in vertical section to disclose the interior mechanism; and Fig 2 is a front elevation of the machine shown in Fig. 1.

The illustrated embodiment of my invcin tion is an impression stitch machine and is provided with a frusto-couical toothed indenting roll or taol 1 of a form common in such machines. The, roll 1 is mounted on Specification of Letters Patent.

Application filed June 14, 1910.

Patented Dec. 31, 1 912. Serial No. 566,745.

the forward end of a horizontal shaft 2,

.journaled in the frame 3 of the machine, and

this shaft is rotated constantly during the operation of the machine to feed the work by the action of the roll.

The roll 1 and shaft 2 are rotated by means of a gear 4- fixed to the rear end of the shaft 2. The gear at engages a pinion 5 journaled on a horizontal shaft 6, and the pinion 5 is fixed to a gear 7 which engages a pinion .8 fixed to a horizontal power-shaft 9. The power-shaft is journaled in the frame of the machine, and is provided with a pulley 1.0 by means of which it may be connected with any suitable source of power.

The roll 1 is adapted to enter the crease between the upper and the welt or sole margin of a shoe, as is usual in machines of this character, rind the shoe is supported upon a work sup ort 11 engaging the lower surface of the s we sole. The work support is slightly .convex on its upper surface, as shr in Fig. 2, to adapt it to properly engage the concave shank of a shoe sole, as well as the convex fore-part. The work support is also so mounted as to permit a slight adjustment of its angular position, and to this end it is mounted i downwardly and rearwardly projecting circularly curved arms 12, engaging similarly formed recesses in forwardly projecting arms 13 on a slide 14. This arrangement is such that by sliding the arms 12 in the arms 13 the work support may be turned slightly in either direction about a horizontal axis located slightly to the rear of the inner extremity of the work support. The worksupport is fixed in adjusted position by means of two binding screws 15 engaging the arms 12, and passing through slots .16 in the arms 13. This method of adjusting the work support forms in itself no part of the present invention, as it is "common in machines of the kind in question.

In order that the work support may suitably engage workpf ,ditl'crent thicknesses, it has provision idr vertical movement toward and from the roll 1, and to this end the slide H is mounted to move vcrtically in guidcways 2 t at the front of the frame of the machine. lly means of a rod 17 pivotcd in lugs 18 on the front of the slide 14-, the slide is connected with a trcadlc' (not shown) of ordinary form. After the work has been inscrtml between the roll and the on the for *ard end oi the power shaft against the roll with an amount 0-. fore \VillCll maybe Varied according to the char acter of the work. r

The mains for subjecting the work to the successive impulsions hereinhetore referred to compriae a hammer 19, which is provided with an upwawily-extending face portion 20 arranged to work in a reeesa 21 in the work support. The hammer it) is pivoted upon a short shaft 2;? journaled in depending lugs 23 at the front of the work support. The hammer is vibrated-about its pirotal support by connection with the power shatt' 9. To this end a pin 25 with a spherical hearing surface lived at therear extremity of the hammer, and a hearing block it" is pivotcd upon the pin 35 and cornieetml by m ans of two Springs "27 with a hearing blot-k The latter ia pivoted upon a apherirai l 29 whit-iris tixed in a crank disk I'Bt) ti \Vhen the vowershai't rotated the, springs 2t andthe hearing lJlOt'Kb 12h and act in the nature ot a eonneetmg rod to riiuhate the hammer and the face Qt) ot the hammer IS thus caused to pound the lower aur'taee of the sole of the shoe at the lnarginai portion upon which the roll 1 operates. 'ihe springs 27 afford the necessary resiliency to permit the hammer to be arrested when in full. on

gagement with the. work regardless (it the variations in the thieknrsa oi tin: work.

The hammer above deseriiwd i 1 a .amooth broad face of oullieient aixe to l injurious indentations of the ion e1 ir't'aee oi the. sole. 'ihe action of the hammer is; to force the work intermittently a niinat the indenting roll with sutlicient pro a cause the latter to indent the work, and in this manner the necessity of subjecting the work to a. considerable constant pressure through the action of the work so avoided. The work is therefore aub ret d to working pressure only iutermittently, and between the surcessive (a1gagement. =v otthe work by the. hammer the wort: is substan tially tree to be moved by the rotation of the roll, and thus the work (can he ted positively by the roll, without subjecting the indented surface of the work to any eonsidrrahle strain in the direction of teed.

While I have shown a particular and well known 't'orm oi rotary tool tor forming indentationa oi a partienlar ehz. "i'trr. it will be obvious that the novel method of operation of my machine may be employed in indenting machines having tools of various characters adapted to term indentations of various forms. The inventi n is not, in generahlimiti-zd to the. emhm'lin'ient thereof hereinbefore described and illustrated in the accompanying drawings, but may be. bodied in various forms within the not of the invention as it is defined in the following claims.

1. An indenting machine having,:in combination, an indenting tool engaging one ft of the work, means for pressing the work and tool together with an amountof force, which may be varied according to the character of the work, and means for inter m ittently forcing the work and tool together substantially as described.

2. An indenting machine, having, in combination, an indenting tool engaging one side of the work. a work support cooperating with the tool to hold the workagainst the tool. and means for hammering the op posite side of the work to force the work against the tool.

3. An indenting machine having, in combination, a rotary indenting tool engaging one vside oi" the work, means for rotating the tool to teed the work, a work support cooperating withthe tool to hold the work, and means engaging the opposite side of the work and n ting to force the work intermittently against the tool.

in An indenting machine, having, in combination, a t'ruato-eonieai toothed/indenting roll adapted to engage the crease between the upper and the sole margin of a shoe, means for rotating the roll to feed the work. a work SHPPOllZ cooperating with the. roll to hold the work, and means engaging the, underside of the sole and acting to force work supportto cause it to engage yieldingly the nndenside of the sole of the shoe,

and means for vibrating the hammer about its pivotal support to cause it to hammer the under side of the sole.

6. An indenting machine having, in combination, a rotary indenting tool engaging one side of the work, means for rotating the tool to feed the work, a work support 00- operating with the tool to hold the work,

and blow delivering means operating against the opposite s de of the work to force the work against the tool.

FARNUM F. DORSEY.

'Witnesses D. Gunman, L. THON. 

